Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2007 Toyota Prius BaseFACTORY OEM SERVICE PROCEDURE
W/O Smart Key System
W/O SMART KEY SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| B2784 | Antenna Coil Open/Short |
| B2785 | Communication Malfunction between ECUs Connected by LIN |
| B2793 | Transponder Chip Malfunction |
| B2794 | Unmatched Encryption Code |
| B2795 | Unmatched Key Code |
| B2796 | No Communication in Immobilizer System |
| B2797 | Communication Malfunction No. 1 |
| B2798 | Communication Malfunction No. 2 |
| B2799 | Engine Immobilizer System Malfunction |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.